Colwyn Bay, North Wales
Kitchen-diner rear extension in Colwyn Bay
An open-plan kitchen, dining and family room that opens straight onto the garden. We design, get the approvals for and build kitchen-diner rear extensions in Colwyn Bay and the surrounding area, with one contract from the first survey to building control sign-off.
Colwyn Bay sits in North Wales, with postcode districts including LL28, LL29 and LL31. For Colwyn Bay kitchens we plan the extraction route and the island drainage before the slab is poured, so nothing has to be chased in later.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a kitchen-diner rear extension cost in Colwyn Bay?
A kitchen-diner rear extension in Colwyn Bay is priced at £1,770–£2,880 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £21,000–£34,500 |
| 4 m wide × 5 m deep (20 m²) | £35,500–£57,500 |
| 4 m wide × 6 m deep (24 m²) | £42,500–£69,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a kitchen-diner rear extension in Colwyn Bay?
Here is how the rules in Wales apply to a kitchen-diner rear extension in Colwyn Bay.
In Wales a single-storey rear extension can often be permitted development if it projects no more than 4 metres beyond the rear wall and is no more than 4 metres high. Wales has no prior approval route for deeper extensions, so anything bigger needs a householder planning application.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Colwyn Bay like to extend?
Older terraces near the centre and post-war semis further out are typical of Colwyn Bay. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a kitchen-diner rear extension in Colwyn Bay comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Kitchen-diner rear extensions near Colwyn Bay
Close by, we work in Llandudno, about 4.8 miles away, and Abergele, about 6.0 miles away.
- Kitchen-diner rear extension in Llandudno
- Kitchen-diner rear extension in Abergele
- Kitchen-diner rear extension in Rhyl
- Kitchen-diner rear extension in Prestatyn
- Kitchen-diner rear extension in Bangor
Other work in Colwyn Bay:
FAQ
Kitchen-diner rear extension questions in Colwyn Bay
How much does a kitchen-diner rear extension cost in Colwyn Bay?
As a guide, £1,770–£2,880 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £21,000–£34,500 at that rate. Your written price follows the survey.
Do you handle building control in Colwyn Bay?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Can I have underfloor heating?
Yes. Wet underfloor heating in the new screed is the usual choice, often with the old room's radiators kept or replaced.
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.